Easton's Bible Dictionary (1897)/Curtain
(1.) Ten curtains, each twenty-eight cubits long and four wide, made of fine linen, also eleven made of goat's hair, covered the tabernacle (Ex. 26:1-13; 36:8-17).
(2.) The sacred curtain, separating the holy of holies from the sanctuary, is designated by a different Hebrew word (peroketh). It is described as a "veil of blue, and purple, and scarlet, and fine twined linen of cunning work" (Ex. 26:31; Lev. 16:2; Num. 18:7).
(3.) "Stretcheth out the heavens as a curtain" (Isa. 40:22), is an expression used with reference to the veil or awning which Orientals spread for a screen over their courts in summer. According to the prophet, the heavens are spread over our heads as such an awning. Similar expressions are found in Ps. 104:21; comp. Isa. 44:24; Job 9:8.